Road machine



M. A. ES T Y.

ROAD MACHINE.

APPLICATlON man JAN-2|, 1921.

1,420,981. PatentedJun 27, 1922.

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M. A. ESTY.

ROAD MACHlNE. APPLICATION FILED JAN- 21, I921.

1,420,981. Patented June 27, 1922-.

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ROAD MAC INE.

To (all whomit may concern:

Be it known that I, MARION A. Es'rY, a citizen of the United States, and resident of the city of Eldon, county of Miller, and State of llflissouri, have invented certain new and useful improvements in Road ltiachines, cl which the following is a specification con taining a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in road machines, and has for its primary object a machine which may be reversed or operated in one direction for grading and crmvning the road bed and may be operated in a reverse direction for smoothing and packing the same.

in the drawings- Fig. 1 is a top plan view of my machine set for grading and crowning the road bed;

Fig. 2 is a side view;

Fig. is an enlarged rear view with parts broken away, showing the means employed for adjusting the scraper and parking blades;

Fig. lis a section taken on the line 4:& of Fig. 2, looking in the direction of the arrows F ig. 5 is a sectional view taken on line 5 5 of Fig. 3, looking in the direction of the arrows in Fig. 3;

Fig. (5 is a sectional view taken on line 66 of Fig. 3 looking in the direction of the lowermost arrows in Fig. 3; and

Fig. 7 is a tragmental view of one of the scraper blades with the plowing attachment secured to the forward end thereof.

Referring by numerals to the accompanying drawings:

7 indi ates the scraper blades, which are made in two sections, 8 and 9. The sections 8 are provided with horizontal tlan 'es l0 and the sections 9 with horizontal flanges 11. These flanges are secured together by means of rivets or bolts 12. The sections 9, as will be observed "from Fig. 3, are curved inwardly and are sharpened along their lower edges. The sections 8 and 9, when cured together, form a very strong grading blade, one blade being disposed on each side of the machine, and are pivoted together at their rear ends, as illustrated in Figs. 1 and 3. Secured to each complete blade at their rear ends are plates 13, which are disposed at the lower portions of the sections 9,

Application filed January 21, 1921.

Specification of Letters Patent. Patented J 1111.9 27, 1922.

Serial No. 439,039.

and at the upper portions of the sections 8 straps or plates 14 are secured which are provided with elongated slots 15.

The straps l3 and Mare pivotally connected together by means of a bolt 16 provided with a nut 17. By means of the slots ed internal screw-threaded bearings 20, in

which are mounted a screw-threaded shaft 21 on which there is mounted an operating wheel 22. By rotating the shaft 21 the scraper plates may be inclined relativeto the vertical This adjustment is made possible by reason of the sliding connection between the straps 1st at the upper portion of the blades, and the fixed connection between the straps 13 ot' the lower portion,thus peri'nitting the upper portions only to be adjusted toward and from each other.

Secured to the scraper plates are bearing frames 23, and mounted therein are worm screws 24 provided with an operating handle 25. These are adapted to engage with threads formed on the shafts 26 on which are mounted wheels 27. By the operation of the work gears 24 the wheels maybe moved upwardly and downwardly, and each one of the wheels may be adjusted upwardly and downwardly independent of the others. By -this means the scraper blades may be inclined towards the horizontal, as desired.

Adjustably connected to the scraper blades are chains 28, which pass around chain wheels 29 carried by a frame 30. iecured to the frame 30 are chains 31, which are adapted to be connected -to the tractor or other motive power. Mounted on the frame 30'is the shat't32, provided with worms 33, which are adapted to engage with worm gears '34. 35 indicates a bevel gear adapted to mesh with the bevel gear 36. The bevel gear 35 is operated by a wheel 37. By rotating this wheel the shaft .32 may be rotated and by the rotation of the shaft 82 the gears 34: are rotated, and consequently the chain wheels 29. By means of the wheel 37 and the wheel 22, the scraper blades may be adjusted at the forward portion to and from each other, and the rear portion of the blades may be inclined. Of course it is obvious that in adjusting the forward portions of the blades relative to the horizontal to and from each other, which is made possible by the sliding connection between the blades let, that the rear ends must also be simultaneously simi larly adjusted by means of the wheel 22; that is to say, if it is desired to move the blades toward each other at their front ends, as illustrated in Fig. 1, it will be necessary to operate the wheel 2:2 so as to permit the screw-threaded bearings 20 to move away from each other.

As constructed it requires two operators to adjust the machine, one for operating the wheel 37 and the other the wheel 22.

The machine is set in Fig. 1 (in solid lines) for grading and crowning the road bed, and if it is desired to smooth and pack the same, the chains by means of which the machine is pulled are attached as shown in dotted lines in Fig. l and the machine is operated by being pulled forward in a direction toward the pivoted end of the machine. The shape of the blades being curved, as stated, they will ride over the bed and smooth and pack it down.

In Fig. 7 T have shown a plowing attachment which I may employ, when desired, for plowing the surface. This attachment consists of a plow 38 which is secured at the forward end of one of the scraper blades by means of bolts 39. Hinges are secured to the plow 3S and the bar s 0, which may be adjusted laterally, as desired, and in order to effect this adjustment T mount a cog wheel all in the member 42 which is bolted to the flanges 10 and 11 by means of bolts 43. This gear wheel 41 is operated by means of a wheel 4a. The gear wheel a1 is adapted to mesh with the rack d5, one end of which is pivotally secured to the bar 40. The rack 4-5 is held in engagement with the gear wheel d1 by means of a coil spring 46. hen this plowing adjustment is secured to one of the scraper blades it is designed to throw the dirt inwardly. This adjustment is especially desirable where it is necessary to plow along the side margins of a graded road surface. The bar a0 is held in the desired adjustmentby means of a removable pin 47 located in suitable holes formed in the member 42. This pin is adapted to be inserted between the teeth formed on the gear wheel 41.

Having fully described my inventiomwhat I. claim is:

l. A road machine composed of two scraper and packing blades pivotally connected together, means located at the rear end of the blades for inclining the same and means for adjusting the blades to and from each other while the machine is in motion, and adjustable wheel supports for said blades, said blades being arranged to grade the road surface and crown it when moving in one direction and when moving in the opposite direction to pack and smooth said surface.

2. A road machine composed of two blades pivoted together at their rear ends, said pivotalconnection permitting the'blades to be inclined by adjusting only the upper portions thereof to and from each other, a pivoted screw-threaded bearing carried by the rear ends of each blade, a screw-threaded shaft provided with an operating wheel mounted in said bearings, a flexible conned tion secured to said blades, a frame operatively connected to said flexible connections, a shaft and work gear and operating wheel for operating said flexible connections, and chains secured to said frame and adapted to be connected to any suitable motive power.

8. A road machine composed of two scraper and packing blade-s, means for pivotally securing the forward ends of said blades together, a vertical shaft pivotally carried by the forward end of each blade, a pivoted internally screw-threaded bearing carried by each shaft, a screw threaded shaft mounted in said bearings, a wheel mounted on said shaft for operating the same whereby the blades may be inclined, means for adjusting said blades relative to the horizontal, flexible connect-ions secured to said blades, a frame having chain wheels around which fl ible connections pass. and a shaft provided with worm gears for rotating said chain wheels for adjusting the blades toward each other.

4-. In a road machine a scraping and packing blade formed of two sections, the adjacent edges of the sections being provided with right angular projecting flanges. bolts passing through said flanges for securing the sections together, one of said sections being provided with a transversely curved surface which may be employed when operated in one direction for scraping the road, and when operated in the opposite direction for packing the road, and means carried by the rear end of the blade for adjusting only the upper portion thereof so as to incline the blade.

M. A. ESTY. 

